In a medium mixing bowl, stir together flour, baking powder, baking soda, salt and sugar. In a small mixing bowl beat egg and milk to blend. Stir in cream-style corn and whole kernel corn. Make a well in the center of the flour mixture. Add the corn mixture and stir until mixed. Heat pan with oil and drop mixture by tablespoon just 3 or 4 at a time. Fry until brown, turning once, 3 to 4 minutes in all.